Improvement in sash-fasteners



aan site Tertre effet WILLIAM GORMAILOF .NEW BRITAIN, CONNECTICUT,ASSIGNOR TC RUS- SELL & ERWIN MANUFACTURING COMPANY.

l Letters vPatent No. 108,778, dated November l, 1870.

The Schedule referred to in these Letters Patent: and making of thesame.

To all whom it 'may concern:

Be it known that I, WILLIAM Gontran, of New Britain, in the county ofHartford and State of Connecticut, have invented a n ew and usefulImprovement in Sash-Fasteners; and I do hereby declare that thefollowing specification, taken in connection with the drawing making apart of .the same, is a full, clear, and exact description thereof.

Figure 1 is a side elevation.

Figure 2 is a top view.

Figure 3. represents a spring washer used in connection with the bar C.

vFigure 4 represents, in cross verticalv section, the plateA, bar C,washer D, and head E.

The invention resides in constructing the plates of a sash-fastener,which are respectively attached to the upper and lower sashes of awindow, with a corresponding longitudinal lip on each plate, in order toe'ectually prevent the insertion of a knife-blade or other tool preparedfor the purpose between the two sashes from the outside of the window tounlock the fastening; and also in the employment of aifadjustablefriction-spring washer, in combination with the cross-bar, not only toenable such bar to beheld at any desired position, but to admit ofincreased friction of the spring upon the bar from time to time, as thespring is worn or weakened by use. v A sashfastener has heretoforegenerally been couvstructed with two' plates, A and B, which arcrespectively secured by screws to the sashes; the one to the top surfaceof the lower rail of the upper sash, and the other to thetop surface ofthe upper rail ofthe lower sash, and so located that when both sashesare -elosed the two plates will have their two contiguous edges abut andltheir top surfaces be in the same plane.

A bar, O, is pivoted to the plate of theupper sash, usually with anotch, c, upon its under edge, and a segmental curved ange, b, isfastened4 to the plate ot' the lwersash, with which liange'thenotch-chin` the bar engages when the bar isvplaced crosswise of thesash, and thus clamps the two sashes so they will not rattle, and'alsoprevents the windowfrom being opened until the bar is folded -back.

I am also aware that sash-holders have been made in'whicha project-ionin the inside plate is made to enter vertically a recess on the outsideplate, and that by such arrangement it is difficult to operate the 'barfrom the outside. It is only necessary, however, that be inserted fromthc outside of the window to oper- 'ate upon the bar C, although theintruder may have out away the wooden lip of the sash itself.

For the purpose f holding the bar C at any position at which it maychance to have been left without liability of'sp'ringing back andunfastening the window, and also to admit of A'an' adjustrlnent .ot' thefriction from time to time, I make use of a spring-washer, D, fig. 3, ofabout three-e`ighths of an. inch diameter, which i' consistsA simply ofa thin plate ot` spring-steel struck up dish-shaped and punched with acentral hole to fit the square part of the joint-pin which holds the barC to the plate A.

The ornamental head-E has a threaded shank,"wlich\ screws into the endot' the joint-pin, and the spring-v washer being ilattened between vtheunder side of the head E and top surface of the bar C exerts aconstantpressure upon the bar to eect the purpose intended.

Lam aware that a spring has heretofore been used i for the sameobject,`in combination with the bar of a sasl1-tstener,ancl I thereforedo not include broadly, as of my invention, thc application of a -springfor such purpose, but only that improvement which results from the useof'a spring of the character as shown and applied to the sash-fastenerbar, in combination with these'rew E, asdescribed, the same beingeconomical in construction and eliicient for'the purpose intended. y

What I claim as my invention, and desire vto secure by Letters Patent,is--I 1. 'lhe plates A and B of a window-sash fastener, provided'withthe corresponding longitudinal lips c, as and for the purposes'specified.

2. In combination with the Abar and plates of a window-sash fastener,the spring-washer C and adjusting head E, as and for the purposesspecified.

' WILLIAM GOB-MAN.

`Witnesses:

EMERY PARKER, LEONARD Dore.

